Fluid-cooling device



F. A. ANDERSON FLUID COOLING DEVICE March 12, 1929.

Filed Oct. 22, 1926 Patented Mar. 12, 1929.

UNITED STATES 1,705,278 PATENT, OFFICE.

FRITZ A. ANDERSON, OF MILTON, WISCONSIN, ASSIGNOR'TO THE BURDICK CORPORA- TION, OF MILTON, WISOONSEN, A CORPORATION OF DELAWARE.

FLUID-COOLING DEVICE.

Application filed October 22, 1926. serial No. 143,338.

My invention relates in general to light therapy and more particularly to a cooling system for obtaining and maintaining the proper operating temperature of therapeutic lamps.

Some lamps extensively employed in the field of light therapy, such for example as mercury arc lamps, must be operated under quite definite and constant temperature conditions in order to produce the desired re sults. Some lamps include small portable housings or casings which hold the mercury arc tube or burner and permit the circulation of water to dissipate the heat and thereby maintain the burner at the desired operating temperature. The cooling water also serves to cool the light rays before application to the patient and maintains the temperature of the casing sufiiciently low to permit ready manipulation without discomfort or danger to the operator or, to the patient,

When patients can be readily brought to the lamp, the necessary cooling water ordinarilyv can be supplied from city water taps, and the waste water can be run to a wash basin or other sewer connection. However, it is often impractical and many times impossible to move a patient with safety, and con sequently it is necessary to move the lamp to large hospitals,'it may be more convenient to be able-to move the lamp from room to room for between widely separated locations in wards, rather than to be compelled to take the patients to a light therapy operating room. Under theseconditions,it may be a great disadvantage and sometimes practically impossible to employ hose of sufiiclent length to use tap water and return the waste 40 to available sewer connections. Furthermore, in large institutions, where a number of such lamps are used frequently and for long periods of tiii'ie.,'tlie waste of Water may become a matter of considerable importance.

supply and waste connections, and subse the patient. :Furthermore, particularly in In. general my invention comprehends a quently insure that possibly long lines of hose are not interfered with.

One of the prlncipal objects of the present invention is to provide a readily mobile light therapy apparatus.

Another obj ect is to provide aninstrument for the contlnuous circulation and cooling of a fluid to be used in connection with a theraasmall compact cabinet- Among the features of the'invention are means whereby the fluid can be seen as it returns from contact with the therapeutic lamo' wherebyit is clearly evident that thefluid has been circulated through the lamp. The cooling is accomplished by means'of a ra diator, the water being circulated therethrough by means of a pump and ablast of air drawn through the radiator by means of a fan, the fan and pump both being propelled by a single electric motor. The motor, fan and pump are mounted on a single base while the radiator is supported entirely on the pump. 1

Other objects and features of the invention will be apparent as the description progresses, particularreference being had to the accompanying drawings wherein:

Fig. 1 is a perspective View of a cabinet in which the device may be housed,.one form of therapy lamp also being shown in the figure;

Fig. 2 is an enlargedfragmentary side elevational view of the fluid controlling device removed from the cabinet, and

I Fig. 3 is a sectional view takenon the line 3-3 of F Zlooking in the direction of the arrows. Y

,Thedevice is designed to be housed in. a small mobile cabinet 10 mounted on rollers 11 and provided with the usual indiice I eating instruments 12-.12. V The cabinet is i also designed to hold the necessary transformers or other current modifying apparatus, none of which are shown herein, however, since they are not directly concerned with the present invention. At the side of the cabinet a lamp supporting bracket 13 is designed to hold a therapeutic lamp designated generally by the reference character 1 1 and which is electrically connected to the cabinet by means of wiring 15. A pair of rubber or similar hose connections 16 and 17 is provided 'for the purpose of circulating a cooling fluid, such as water, through thelamp.

The fluid controlling portion of the apparatus is shown in Fig. 2 and comprises abase 18 on which a motor 19, fan supporting bracket 21 and pump 22 are mounted. The pump 22 supports a radiator 23 by means of a pipe 2-1, the pipe 24 also serving to conduct the fluid (indicated at 2'2" from the radiator. The water circulatory system will be referred to more in detail latter.

The motor 19 is driver from a suitable source of power .(not shown) and drives the pump 22 by means .of the motor shaft 26. The fan supporting bracket 21 has pivoted thereto a fan supporting arm 27, the fan be ing supported by the fan shaft 29 suitably journaled in the upper portion of the arm 27 The motor shaft 26 has keyed thereto a sheave-lithe pulley .31 which connects with a similar but slightly smaller pulley 32 by means of a belt 33, the pulley being keyed to the fan shaft 29. Operation of the motor 19 therefore, results in rotatory movement of the fan 28.

For the purpose of maintaining proper friction between the belt 83 and the pulleys 32 and 31, a lower tail extension 34: is pr vided on the arm 27 and itproject101135 is formed integral'with the base 18 whereby a spring 36 may be connected between these membersto urge the arm 27 in a clockwise direction, thus tending to force the pulley 32 away from the pulley 31. Movement is arrested by the belt 33, and this arresting action of the belt assures its maintaining proper tension at all times and under all circumstances.

The outlet side'ofpump 22 has connected thereto a feed pipe 37 leading to a hose conncction 39, which is designed to project at any convenient location out through the cabinet 10, to permit connection with the hose 16 or 17, depending upon which one isconnected to the intake side of the lamp 1 1. The other hose is connected to a hose connection 41 which communicates with a pipe 42 within the hollow .ppcr portion of the radiator 23. The top portion of the radiatoralso has an openingto which integrally fastened a collar-like projection 43 to which a don'ie-sbaped Iglass member 44' is secured. This domeshaped member is designed to project upwardly through the top of the cabinet as illust 'ated in Fig. 1, and the flu d returnlng from the lamp 14 passing through the pipe 42 is directed upwardly against the inside of the v dome-shaped member 44 whereby actual visi ble cvidence the flow of the Water may be observed. I

It'will be seen that the motor shaft 26 eX- tends through to the pump 22 and that accordingly both the fan and the water pump are driven by the motor. The mounting of the motor, fan bracket, and pump upon a single small base, and the supporting of the radiator upon. thepu mp makes the devicevery compact, and results in a structure of .very great lightness with more than the requisite strength.

"lhe'provision of the visible water column against the inside of the dome-shaped transparent member, as the .water returns from the lamp serves to inform the operator that proper circulation is being obtained. I Having described my invention what I claim new and desire to secure by Leters Patent is:

1. A fluid cooling device designed to be employed with a fluid cooledtherapeutic ray emission device and connected therewith by means of ilexiblehose, said device comprising a radiator, a fluid circulating pump and a motor mounted on common base, hose connectors on said radiator, and means for visibly indicating that the fluidis in processof circulation, the'fluid viewed beingthatimmediately returned from contact with the ray emission device. I

2. A fluid cooling device designed to be employed with a fluid cooled therapeutic lamp, said device comprising amotor, a fan bracket having a cooling fan secured thereon a fluid circulating pump,the motor, fan bracket, and pump being mounted on a single base, and the fan and pump both being driven by the motor shaft, a radiator supported entirely by the pump, and means for transferringand returning fluid from said radiator and pump to and from said therapeutic lamp.

3.11 fluid cooling device comprising an electric motor, a cooling fan'driven by said motor, a pump driven by said motor, said motor, said fan and said pump all being mounted upon a single base, a water cooling radiator disposed in registration with. said cooling fan and entirely supported by said pump, thesupport therefore consisting of the inlet conduit to the pump communicating with the radiator at its base. 1 i

In witness whereof, I hereunto subscrib my name this 13 day of October, 1926.

FRITZ A; ANDERSON. 

